Caliber adapters for use with any break open 12 gauge shotgun. Eight adapters with a length of 8" are included in the set with the following calibers: .380 , 9 mm , .357Mag/.38SP , .40 S & W, .44 Mag, .45 ACP , .410/.45colt, 20GA. Carry pouch included

* For Chiappa PAK-9 pistols. * Chiappa PAK-9 Stock Adapter can be used with skeleton stocks, pistol braces. * The adapter is easily installed bolting this adapter in its place. * Can also be used on other pistols like the Romanian Draco AK pistol just by drilling one hole in the rear trunnion.